4 Credit-Control-Answer (CCA) Message Content (continued)
Online and Offline Charging in the IMS 183
Parameter Status
Multiple-services-credit-control
Quota-holding-time
Granted-service-unit
Tariff-time-change
CC-time
CC-money
Unit-value (mandatory)
Value-digits (mandatory)
Exponent
Currency-code
CC-total-octets
CC-input-octets
CC-output-octets
CC-service-specifi c-units
Time-quota-threshold
Volume-quota-threshold
AVP
Requested-service-unit
Used-service-unit
Tariff-change-usage
Service-identifi er
Rating-group
G-S-U-Pool-reference
G-S-U-pool-identifi er (mandatory)
CC-unit-type (mandatory)
Unit-value (mandatory)
Validity-time
Result-code
Final-unit-indication
Final-unit-action
Restriction-fi lter-rule
Filter-ID
Redirect-server
Redirect-address-type (mandatory)
Redirect-server-address (mandatory)
AVP
PS-furnish-charging-information
GPRS-charging-ID (mandatory)
PS-free-format-data (mandatory)
PS-append-free-format-data
Optional
Re-auth-request (RAR) is used for online charging and is sent by the OCS to the network
element (see Table 7.5). This is used when the original credit has been exhausted
but the session is going to continue. The network element is able to request additional
credits for the same session.
Re-auth-answer (RAA) is sent by the network back to the OCS in response to an RAR
(see Table 7.6). This response will identify the amount of credit being given for the continuing
session.
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